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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_VCL_INC_FONTSUBSET_HXX
#define INCLUDED_VCL_INC_FONTSUBSET_HXX
#include <rtl/ustring.hxx>
#include <tools/gen.hxx>
#include <o3tl/typed_flags_set.hxx>
#include "salglyphid.hxx"
namespace vcl { struct TrueTypeFont; } ///< SFT's idea of a TTF font
enum class FontType {
NO_FONT = 0,
SFNT_TTF = 1<<1, ///< SFNT container with TrueType glyphs
SFNT_CFF = 1<<2, ///< SFNT container with CFF-container
TYPE1_PFA = 1<<3, ///< PSType1 Postscript Font Ascii
TYPE1_PFB = 1<<4, ///< PSType1 Postscript Font Binary
CFF_FONT = 1<<5, ///< CFF-container with PSType2 glyphs
TYPE3_FONT = 1<<6, ///< PSType3 Postscript font
TYPE42_FONT = 1<<7, ///< PSType42 wrapper for an SFNT_TTF
ANY_SFNT = SFNT_TTF | SFNT_CFF,
ANY_TYPE1 = TYPE1_PFA | TYPE1_PFB
};
namespace o3tl {
template<> struct typed_flags<FontType> : is_typed_flags<FontType, (1<<8)-1> {};
}
class FontSubsetInfo final
{
public:
explicit FontSubsetInfo();
~FontSubsetInfo();
bool LoadFont( FontType eInFontType,
const unsigned char* pFontBytes, int nByteLength );
bool LoadFont( vcl::TrueTypeFont* pSftTrueTypeFont );
bool CreateFontSubset( FontType nOutFontTypeMask,
FILE* pOutFile, const char* pOutFontName,
const sal_GlyphId* pGlyphIds, const sal_uInt8* pEncodedIds,
int nReqGlyphCount, sal_Int32* pOutGlyphWidths = nullptr );
public: // TODO: make subsetter results private and provide accessor methods instead
// subsetter-provided subset details needed by e.g. Postscript or PDF
OUString m_aPSName;
int m_nAscent; ///< all metrics in PS font units
int m_nDescent;
int m_nCapHeight;
tools::Rectangle m_aFontBBox;
FontType m_nFontType; ///< font-type of subset result
private:
// input-font-specific details
unsigned const char* mpInFontBytes;
int mnInByteLength;
FontType meInFontType; ///< allowed mask of input font-types
vcl::TrueTypeFont* mpSftTTFont;
// subset-request details
FontType mnReqFontTypeMask; ///< allowed subset-target font types
FILE* mpOutFile;
const char* mpReqFontName;
const sal_GlyphId* mpReqGlyphIds;
const sal_uInt8* mpReqEncodedIds;
int mnReqGlyphCount;
bool CreateFontSubsetFromCff( sal_Int32* pOutGlyphWidths );
bool CreateFontSubsetFromSfnt( sal_Int32* pOutGlyphWidths );
static bool CreateFontSubsetFromType1( const sal_Int32* pOutGlyphWidths );
};
#endif // INCLUDED_VCL_INC_FONTSUBSET_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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